Glass-melting tank



July 24, 1923- 46293 H. G. WILLET-rs GLASS MELTING TANK Filed May 4, 1922 ATTORNEY Patent .idly 4, 192.

. `XVI'ED HARRY G. WILLET'I'S, 0F GRAFTON, PENNSYLVANIA, ASSIGNOR THE'WILETTS OOMIPANY, OF PIIZTTSBURGH, PENNSYLVANIA, A. CORPORATION DF PENNSYL-- To all it may cof/wem.'

Beit known that I, HARRY G. AVVniLn'rrs,

\` tanks. It is the object of this invention to provide' a' glass-melting tank with means whereby the highly refractory bricks, lof which 1t is made, shalll have a longer life than the` ordinary brick Amelting tanks known to me. Molten glass is very destruc- -tiveto -the common melting tanks and it is my object to provide the constituent bricks, preferably externally, with means to 1n- Icrease lthe radiation of heat therefrom,

thereby reducing the temperature at the contact surfaces of the molten glass with the Referring t0 the accompanying drawing,

appnation mea my 4,

`GLASS-Metairie Tm.

1922. serial No. 558,378. ,l Upon the said surface and at the edges thereof, I arrange other 'refractory bricks 3 so as to form with the said surface 2 a glass-containing tank. Preferably the upper inner corners of the bricks 3 are beveled `40 as shown at 4.-. The bricks 1 and Sare superposed preferably so as to break joints as shown in Figs. 1 and 3.. The outerffaces of the bricks 3, and referably also of. the bricks 1, are provi the radiating area of thelateral exterior surf-ace of the tank and materially reduce 'the temperature of the inner surfaces of the 50 ture or shape Vof the projections on the 55.

bricks except as specifically described in the ap'pended claims. I clain1 A l. A glassmelting tank having its lateral walls containing refractory bricks, some havingone face provided with ribs, thelatter being on the outer surface of said tank. 2. A glass-melting tank having its lateral Walls containing refractory bricks, some having one face provided with vertical ribs,

the latter being pn the outer surface 0f said tank.

Signed at Pittsburgh, Pa., this 3rd day of May, 1922. HARRY G. WLLETTS.

ed with'. projections 45 which I. have shown in the form Iofvertical rounded ribs 5, which materially increase 

